Cost associated with reimbursable income. This occurs when a services entity incurs expenses on behalf of the client and passes through the cost of reimbursable expenses to a client.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, netted by jurisdiction and classified as current.

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New Accounting Pronouncements (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Jan. 01, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
New Accounting Pronouncements
Income tax benefit		$ 759,064	$ 9,473	$ 750,641	$ (9,065)
Decrease in valuation allowance				(766,200)
Net cash provided by (used in) operating activities				337,329	320,031
Net cash provided by (used in) financing activities				(109,480)	(77,960)
Reimbursable management costs		$ 6,679	$ 5,965	19,824	$ 8,820
Accounting Standards Update 2016-09
New Accounting Pronouncements
Income tax benefit				4,300
Accounting Standards Update 2016-09 \| Adjustment
New Accounting Pronouncements
Increase in deferred tax assets	$ 16,400
Decrease in valuation allowance	$ 16,400
Net cash provided by (used in) operating activities				8,500
Net cash provided by (used in) financing activities				$ (8,500)